Does undetectable equal nonexistent?
If you mean undetected, then clearly not, since we might yet detect those things. If you mean necessarily undetectable, I don’t see how the question is answerable, or even has an answer at all, in some sense.
If you mean undetected, then clearly not, since we might yet detect those things. If you mean necessarily undetectable, I don’t see how the question is answerable, or even has an answer at all, in some sense.